If it negatively affects your product’s performance, our critical seals keep it out. Whether it’s temperatures, dust and contaminants, moisture, wind, and more, critical seals can make or break product performance. Our engineers take excellent performance today and imagine it better for tomorrow.
Industrial Lighting
When difficult sealing problems require a combination of complex gasket shapes, extreme temperature resistance, and flexibility, choose from one of our 30 to 80 durometer SHORE “A” compounds. Find a solution to even your most complex sealing needs. All compounds have a continuous standard operating temperature of -85° to 400°F. Our die-making capabilities allow customers to specify complex geometric shapes, producing cords, rectangles, tubes, picture frames, and any other complex geometries.
For applications where lights create extreme heat, our seals and gaskets won’t melt, won’t let in dust, and enhance explosion-proof capabilities.
Process Tubing and Insulation
Our closed cell sponge tubing is an excellent piping insulator, with a high temperature rating of 400°F allowing it to be used in areas where elastomeric and plastic-based insulation tubing fail. At temperatures up to +212°F, it has a useful life of 10 to 20 years. Tooling is available for most ID and OD combinations. Its tough skin resists nicks and its insulating values keep in the heat or cold. Product comes in 5 hardness ranges of standard silicone sponge, with 3 additional hardness ranges with fire retardant additives.
Our process tubing is designed to perform to the standards of many industries and applications. Extruded solid silicone cords and tubes can be used to make gaskets, seals and O-rings. They are also used as grips and handles to ensure personnel protection on hoses and nozzles. These parts can be produced up to 2.50”, and make excellent bumpers and guards for equipment protection. Our mixing and compounding capabilities allow us to produce hardness ranges from 30 to 80 shore “A” durometer, using economical commercial grade or high-strength specification-grade materials.
Aerospace
Bellofram Silicones are industry experts in aerospace silicone gaskets and seals. Our custom molding and compounding processes allow us to produce aircraft window seals that can withstand both runway and in-flight temperature extremes, with materials that exceed BMS requirements. For aerospace requirements, Bellofram Silicones is on the qualified products list for Boeing BMS 1-23, and all three hardnesses of BMS 1-60. We are able to produce closed cell silicone sponge cord product with a compression set value of 10% and in a variety of colors.
We are the only manufacturer to meet AA59588 CL3B GR30, the most demanding measure of material tear and flex resistance.
The strategic embedding of fabrics within our flex-resistant silicone adds strength and prevents stretching. Our custom mixes also create extrusions, molded parts, and sheets to stringent military specifications. So, whether your requirements are for highly engineered gaskets, or flame retardant squeak and rattle sponge, we’ve got you covered.
Clean Room and Laboratory
Silicone is an ideal fit for the high standards of cleanliness and cleanability inherent in clean room and laboratory environments. Silicone is easy to sterilize, resists bacteria, and is UV stable.
We produce closed cell sponge in compression deflection range from 2 to 27 PSI. Skin on all surfaces enhances cleanability and resists contaminants. Solid silicone construction is available in 30 to 80 shore “A” durometer, and in material choices from economical commercial grade to high-performance low temperature, flex and tear resistant grades. These products can be tinted to most colors.
Our in-house mixing capabilities allow us to easily accommodate custom formulations, including materials to the ASTM, SAE, MIL-STD. Our other military and industrial specifications, and custom compounds can yield open or closed cell construction.
Industrial Gaskets and Seals
Difficult sealing applications require a combination of complex gasket shapes and extreme flexibility. Our full in-house die making capabilities allow us to produce cords, rectangles, tubes, and any other complex geometries. Our in-house mixing provides a choice of materials with a wide compression deflection rating, ranging from ASTM D 1056 2D1 soft density to ASTM D 1056 2D5 extra-firm density, with a temperature range of -85° to 400°F for continuous use.
Our industrial gaskets and seals stand up to harsh conditions, wet environments, high pressures, and other critical applications. Each piece is precision-engineered for improved quality, long product life, tight tolerances, and strict alignment.
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Commercial Food Service and Food Processing NSF/ANSI 51
We offer solid silicone rubber extruded materials in NSF/ANSI 51-certified versions, FDA-approved ingredients for food service and food processing applications. We also manufacture commercial-grade silicones that are maintenance-free in less-demanding environments.
Extensive expertise in custom formulations and toolmaking capabilities allow us to produce solid silicone elastomer extrusions in almost limitless shapes and hardnesses, in diameters up to 2.500”. Multiple extrusion manufacturing and production lines allow us to produce virtually any required quantities with very short lead times. All compounds have a continuous standard operating temperature of -85° to 400°F.
Medical
Silicone inhibits the growth of microbes, making it ideal for medical use. Bellofram Silicones are frequently found in sterilization units that must withstand temperatures of 500 degrees or more, as well as providing vibration protection for highly calibrated testing and monitoring equipment.
Our silicone molding department produces closed cell sponge in compression deflection range from 2 to 27 PSI. Skin on all surfaces enhances cleanability and resists contaminants. Our products meet or exceed the highest quality standards put forth by health care professionals.
Military and Defense
Our in-house custom mixes create extrusions, molded parts, vulcanized and fabricated parts, and sheets to ASTM, SAE, MIL-STD and other stringent military specifications. We are industry experts in aerospace silicone gaskets and seals, producing materials to all five hardness ranges of ASTM D1056. Bellofram Silicones is on the qualified products list for Boeing BMS 1-23, and all three hardnesses of BMS 1-60. We are able to produce product with a compression set value of 10%, and in a variety of colors.
Custom molding and compounding processes allow us to produce aircraft window seals that can withstand both runway and in-flight temperature extremes, with materials that exceed BMS requirements. The strategic embedding of fabrics within our flex-resistant silicone adds strength and prevents stretching. Our other military specifications and custom compounds can yield open or closed cell construction. From highly engineered gaskets, flame-retardant components, or simple squeak and rattle sponge, we’ve got you covered.
Our in-house mixing capabilities allow us to produce materials to all five hardness ranges of ASTM D1056. For aerospace requirements, Bellofram Silicones is on the qualified products list for Boeing BMS 1-23, and all three hardnesses of BMS 1-60. We are able to produce product with a compression set value of 10%, and in a variety of colors.
Oil and Gas
We offer oil-resistant molded, extruded, and sheet product including a version with fluorosilicone sponge properties, meeting the requirements of AMS 3323. The ability to offer fluoropolymers in molded form is critical to oil and gas operations. With these and other available options, BELLOFOAM™ silicone foam rubber sponge sheets cover a wide range of demanding physical, temperature, and chemical environments.
Our high-performance products withstand the extreme conditions of oil and gas applications, protecting valuable equipment from dust, moisture, heat, and oil. They help improve life and performance while reducing maintenance and downtime.
HVAC
When difficult sealing problems require a combination of complex gasket shapes and extreme flexibility, our full in-house die-making capabilities allow us to produce cords, rectangles, tubes, and any other complex geometries.
Their flexibility in extreme hot and cold temperatures maintains sealing capability, protecting and extending the life of HVAC equipment.
For the HVAC industry, we specialize in gasketing for dampers and louvers, edge blade seals, and components rated UL 55 S.
